libstdc++-v3/testsuite/25_algorithms/count_if/1.cc

   1 // Copyright (C) 2005-2024 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // 25.1.6 count_if
  19
  20 #include <algorithm>
  21 #include <testsuite_hooks.h>
  22 #include <testsuite_iterators.h>
  23
  24 using __gnu_test::test_container;
  25 using __gnu_test::input_iterator_wrapper;
  26
  27 typedef test_container<int, input_iterator_wrapper> Container;
  28 int array[] = {0, 0, 0, 1, 0, 1};
  29
  30 bool
  31 predicate(const int& i)
  32 { return i == 1; }
  33
  34 void
  35 test1()
  36 {
  37   Container con(array, array);
  38   VERIFY(std::count_if(con.begin(), con.end(),
  39                        predicate) == 0);
  40 }
  41
  42 void
  43 test2()
  44 {
  45   Container con(array, array + 1);
  46   VERIFY(std::count_if(con.begin(), con.end(),
  47                        predicate) == 0);
  48 }
  49
  50 void
  51 test3()
  52 {
  53   Container con(array, array + 6);
  54   VERIFY(std::count_if(con.begin(), con.end(),
  55                        predicate) == 2);
  56 }
  57
  58 int
  59 main()
  60 {
  61   test1();
  62   test2();
  63   test3();
  64 }